Improper locking in Linux kernel - CVE-2025-38532

Vulnerability identifier: #VU114151

CSH Severity: Low

CVSS v4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2025-38532

CWE-ID: CWE-667

Exploitation vector: Local access

Exploit availability: No public exploit available

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to improper locking within the wx_alloc_rx_buffers() and wx_clean_rx_ring() functions in drivers/net/ethernet/wangxun/libwx/wx_lib.c, within the wx_configure_rx_ring() function in drivers/net/ethernet/wangxun/libwx/wx_hw.c. A local user can perform a denial of service (DoS) attack.

Linux kernel
Ubuntu
Anolis OS
kernel
bpftool
kernel-64k-devel
kernel-64k-debug-devel
kernel-64k-debug
kernel-64k
python3-perf
perf
kernel-tools-libs
kernel-tools
kernel-headers
kernel-devel
kernel-debug-devel
kernel-debug
kernel-tools-libs-devel
linux (Ubuntu package)
linux-aws-fips (Ubuntu package)
linux-lowlatency (Ubuntu package)
linux-hwe-6.8 (Ubuntu package)
linux-xilinx (Ubuntu package)
linux-aws (Ubuntu package)
linux-gcp (Ubuntu package)
linux-ibm (Ubuntu package)
linux-nvidia-lowlatency (Ubuntu package)
linux-azure (Ubuntu package)
linux-azure-fips (Ubuntu package)
linux-gcp-fips (Ubuntu package)
linux-gcp-6.8 (Ubuntu package)
linux-azure-6.8 (Ubuntu package)
linux-raspi-realtime (Ubuntu package)
linux-realtime-6.8 (Ubuntu package)
linux-oem-6.14 (Ubuntu package)
linux-realtime-6.14 (Ubuntu package)
linux-aws-6.14 (Ubuntu package)
linux-gcp-6.14 (Ubuntu package)

Install update from vendor's repository.

kernel - update to 6.6.102-5
bpftool - update to 6.6.102-5
kernel-64k-devel - update to 6.6.102-5
kernel-64k-debug-devel - update to 6.6.102-5
kernel-64k-debug - update to 6.6.102-5
kernel-64k - update to 6.6.102-5
python3-perf - update to 6.6.102-5
perf - update to 6.6.102-5
kernel-tools-libs - update to 6.6.102-5
kernel-tools - update to 6.6.102-5
kernel-headers - update to 6.6.102-5
kernel-devel - update to 6.6.102-5
kernel-debug-devel - update to 6.6.102-5
kernel-debug - update to 6.6.102-5
kernel-tools-libs-devel - update to 6.6.102-5
linux (Ubuntu package) - addressed in versions 6.8.0-100.100, 6.8.0-1047.51, 6.14.0-36.36, 6.14.0-36.36~24.04.1, 6.14.0-1016.16~24.04.1, 6.14.0-1017.17, 6.14.0-1020.21
linux-aws-fips (Ubuntu package) - addressed in versions 6.8.0-100.100+fips1, 6.8.0-1046.49+fips1
linux-lowlatency (Ubuntu package) - update to 6.8.0-100.100.1
linux-hwe-6.8 (Ubuntu package) - addressed in versions 6.8.0-100.100.1~22.04.1, 6.8.0-100.100~22.04.1
linux-xilinx (Ubuntu package) - addressed in versions 6.8.0.1023.24, 6.8.0-1023.24
linux-aws (Ubuntu package) - addressed in versions 6.8.0-1030.33, 6.8.0-1043.44, 6.8.0-1043.44~22.04.1, 6.8.0-1046.49~22.04.1
linux-gcp (Ubuntu package) - addressed in versions 6.8.0-1043.48, 6.8.0-1047.50~22.04.2
linux-ibm (Ubuntu package) - addressed in versions 6.8.0-1044.44, 6.8.0-1044.44~22.04.1
linux-nvidia-lowlatency (Ubuntu package) - update to 6.8.0-1046.49.1
linux-azure (Ubuntu package) - addressed in versions 6.8.0-1046.52, 6.14.0-1017.17, 6.14.0-1017.17~24.04.1
linux-azure-fips (Ubuntu package) - update to 6.8.0-1046.52+fips1
linux-gcp-fips (Ubuntu package) - update to 6.8.0-1047.50+fips1
linux-gcp-6.8 (Ubuntu package) - update to 6.8.0-1047.50~22.04.2
linux-azure-6.8 (Ubuntu package) - update to 6.8.0-1051.57~22.04.1
linux-raspi-realtime (Ubuntu package) - addressed in versions 6.8.0-2037.38, 6.8.1-1041.42
linux-realtime-6.8 (Ubuntu package) - update to 6.8.1-1041.42~22.04.1
linux-oem-6.14 (Ubuntu package) - update to 6.14.0-1016.16
linux-realtime-6.14 (Ubuntu package) - update to 6.14.0-1016.16~24.04.1
linux-aws-6.14 (Ubuntu package) - update to 6.14.0-1017.17~24.04.1
linux-gcp-6.14 (Ubuntu package) - addressed in versions 6.14.0-1018.18, 6.14.0-1020.21~24.04.1

• https://git.kernel.org/stable/c/10e27b2a6ebeda49e9c2897a699d3ce1ded565ee
• https://git.kernel.org/stable/c/d510116c80b37efb100ce8d5ee326214b0157293
• https://git.kernel.org/stable/c/d992ed7e1b687ad7df0763d3e015a5358646210b
• https://git.kernel.org/stable/c/ee527d3fba4dae1d619d2d0438624002c8e99e24

• Improper locking in Linux kernel wangxun libwx driver
• Anolis OS update for kernel:6.6
• Ubuntu update for linux-oem-6.14
• Ubuntu update for linux-realtime-6.14
• Ubuntu update for linux
• Ubuntu update for linux-aws-6.14
• Ubuntu update for linux-gcp-6.14
• Ubuntu update for linux-azure
• Ubuntu update for linux
• Ubuntu update for linux-realtime-6.8
• Ubuntu update for linux-gcp-6.8
• Ubuntu update for linux-aws-fips
• Ubuntu update for linux-raspi-realtime
• Ubuntu update for linux-aws
• Ubuntu update for linux-gcp-fips
• Ubuntu update for linux-hwe-6.8
• Ubuntu update for linux-lowlatency
• Ubuntu update for linux-gcp
• Ubuntu update for linux-nvidia-lowlatency
• Ubuntu update for linux-xilinx
• Ubuntu update for linux-ibm
• Ubuntu update for linux-azure-fips
• Ubuntu update for linux-azure
• Ubuntu update for linux-azure-6.8